Handle for pneumatic tools.



R. H. SMITH.

HANDLE Fon PNEUMATIC TOOLS.

- APPLICATION FILED JAN. 17, 1916. 1,191,354.

Patented July 18, 1916.

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ROBERT H. SMITH, 'OF SAN FRANCISCO, CALIFORNIA.

HANDLE FOB PNEUMATIC TOOLS.

Specification of Letters Patent.

Patented July is, rare.

Application filed January 17, 1916. Serial No. 72,654.

T 0 all whom it may concern:

Be it'known that 1, ROBERT H. SMITH, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Handles for Pneumatic Tools, of which the following is a specification.

Pneumatic riveters, pneumatic drills, and other tools having a part reciprocated by compressed air, in general, require that the tool should be held with continued pressure against the object or material to be treated. The strain of holding a manually-operated pneumatic riveter or drill with continued pressure against the rivet or other material being treated becomes greatly fatiguing, especially because of the continuous vibration imparted to the hands and arms.

The object of the present invention is to provide means whereby the strain and fatigue of holding these tools to their work will be greatly reduced.

In the accompanying drawing, Figure 1 is a front view of my improved device; Fig. 2 is a plan view thereof; Fig. 3 is a transverse view showing the device in operation.

Referring to the drawing, 1 indicates a manually-controlled, pneumatic riveter. Secured thereto is my improved device, shown in detail in Figs. 1 and 2. This device consists principally of a spring steel strap 2, doubled on itself, as shown at 3, at, or near, the middle, the two halves of the strap extending alongside each other, as shown at 4, to a considerable distance, and then being bent out of their plane in helicoidal curves on opposite sides of the parts 4, and being then each twisted through a right angle, as shown at 7, and brought together and secured by rivets 8. They are then bent oppositely to each other in circular form, as

shown at 9, so as together to form almost a complete circle and the extreme ends 10 are bent parallel with each other. A bolt 11, passed through holes in the terminal portions 10 and secured by a nut 12, forms a clamp with said circular portions 9. By means of said clamp the device is clamped around the cylindrical casing 13 ofthe riveting tool, as shown in Fig. 8. With the use of this auxiliary device, the operator does not attempt to press the riveter against the rivet by the muscular force of his arms, but instead thereof presses his body against the portions 4 of the device, and merely directs the riveter by means of his hands. Much greater force canbe produced by the muscles of the body and legs than by those of the arms, and this force can be sustained for a much longer period without undue I fatigue. Moreover, the means for transmitting this force is resillent, the parts of the device extending from the riveter, esperiveter, so that practically no jar or vibration is transmitted from the pneumatic tool to the body of the operator.

I claim 1. A device for holding a pneumatic tool to its work having at one end means for rigidly connecting it with the tool, the other end being free and resilient to form a body rest.

2. A device for holding a pneumatic tool to its work having at one end means for rigidly connecting it with the tool, the other end being free to form a body rest and resiliently connected with the first-named end.

3. A device for holding a pneumatic tool to its work provided with means for securing one end thereof around the casing of the pneumatic tool, the remainder of the device extending freely from the pneumatic tool in a transverse direction and having a smooth surface in.a plane transverse to the direction of operation of the pneumatic tool for receiving the forward pressure of the body when operated. V

4. A device for holding a pneumatic tool I to its work comprising a spring steel strap doubled upon itself near the middle and having portions extending from said middle substantially parallel with, and adjacent to, each other to form a rest for the body of the operator, and portions extending oppositely to each other in circular curves and having holes through their terminal portions, a bolt through said holes and a nut on said bolt to draw said terminal portions together and form, With said circular portions, a clamp adapted to secure the device to the casing of the pneumatic tool.

6. A device for holding a pneumatic tool to its Work comprising a spring steel strap doubled upon itself near the middle and having portions extending from said middle substantially parallel with, and adjacent to, each other to form a rest for the body of the operator then bending in helicoidal curves on opposite sides of said rest, then twisted through a right angle and secured together, and then extending oppositely to each other in circular curves and having holes through their terminal portions, a bolt through said holes and a nut on said bolt to draw said terminal portions together and form, with said circular portions, a clamp adapted to secure the device to the casing of the pneumatic tool.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ROBERT H. SMITH.

WVitnesses F. M. WRIGHT, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I G. 

